1 #!/usr/bin/env bash 2 # 3 # Test COW from backing files 4 # 5 # Copyright (C) 2012 Red Hat, Inc. 6 # 7 # This program is free software; you can redistribute it and/or modify 8 # it under the terms of the GNU General Public License as published by 9 # the Free Software Foundation; either version 2 of the License, or 10 # (at your option) any later version. 11 # 12 # This program is distributed in the hope that it will be useful, 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 # GNU General Public License for more details. 16 # 17 # You should have received a copy of the GNU General Public License 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. 19 # 20 21 # creator 22 owner=kwolf@redhat.com 23 24 seq=`basename $0` 25 echo "QA output created by $seq" 26 27 status=1 # failure is the default! 28 29 _cleanup() 30 { 31 _cleanup_test_img 32 } 33 trap "_cleanup; exit \$status" 0 1 2 3 15 34 35 # get standard environment, filters and checks 36 . ./common.rc 37 . ./common.filter 38 39 _supported_fmt qcow qcow2 vmdk qed 40 _supported_proto file 41 _unsupported_imgopts "subformat=monolithicFlat" \ 42 "subformat=twoGbMaxExtentFlat" \ 43 "subformat=twoGbMaxExtentSparse" \ 44 "subformat=streamOptimized" 45 46 CLUSTER_SIZE=4k 47 size=128M 48 49 echo 50 echo "== creating backing file for COW tests ==" 51 52 TEST_IMG_SAVE="$TEST_IMG" 53 TEST_IMG="$TEST_IMG.base" 54 55 _make_test_img $size 56 57 backing_io() 58 { 59 local offset=$1 60 local sectors=$2 61 local op=$3 62 local pattern=0 63 local cur_sec=0 64 65 for ((i=0;i<=$((sectors - 1));i++)); do 66 cur_sec=$((offset / 512 + i)) 67 pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 )) 68 69 echo "$op -P $pattern $((cur_sec * 512)) 512" 70 done 71 } 72 73 backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 74 75 TEST_IMG="$TEST_IMG_SAVE" 76 77 _make_test_img -b "$TEST_IMG.base" -F $IMGFMT 6G 78 79 echo 80 echo "== COW in a single cluster ==" 81 $QEMU_IO -c "write -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io 82 $QEMU_IO -c "write -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io 83 $QEMU_IO -c "write -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io 84 85 $QEMU_IO -c "read -P 0x77 0 2k" "$TEST_IMG" | _filter_qemu_io 86 backing_io $((2 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 87 $QEMU_IO -c "read -P 0x88 6k 2k" "$TEST_IMG" | _filter_qemu_io 88 backing_io $((8 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 89 $QEMU_IO -c "read -P 0x99 9k 2k" "$TEST_IMG" | _filter_qemu_io 90 backing_io $((11 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 91 92 echo 93 echo "== COW in two-cluster allocations ==" 94 $QEMU_IO -c "write -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io 95 $QEMU_IO -c "write -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io 96 $QEMU_IO -c "write -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io 97 98 $QEMU_IO -c "read -P 0x77 16k 6k" "$TEST_IMG" | _filter_qemu_io 99 backing_io $((22 * 1024)) 8 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 100 $QEMU_IO -c "read -P 0x88 26k 6k" "$TEST_IMG" | _filter_qemu_io 101 backing_io $((32 * 1024)) 2 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 102 $QEMU_IO -c "read -P 0x99 33k 5k" "$TEST_IMG" | _filter_qemu_io 103 backing_io $((38 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 104 105 echo 106 echo "== COW in multi-cluster allocations ==" 107 $QEMU_IO -c "write -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io 108 $QEMU_IO -c "write -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io 109 $QEMU_IO -c "write -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io 110 111 $QEMU_IO -c "read -P 0x77 48k 15k" "$TEST_IMG" | _filter_qemu_io 112 backing_io $((63 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 113 $QEMU_IO -c "read -P 0x88 66k 14k" "$TEST_IMG" | _filter_qemu_io 114 backing_io $((80 * 1024)) 6 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 115 $QEMU_IO -c "read -P 0x99 83k 15k" "$TEST_IMG" | _filter_qemu_io 116 backing_io $((98 * 1024)) 4 read | $QEMU_IO "$TEST_IMG" | _filter_qemu_io 117 118 _check_test_img 119 120 # success, all done 121 echo "*** done" 122 rm -f $seq.full 123 status=0 124